Today while I was working on my computer, the screen went black, but you could still SEE the faint impression of the page I was just on and the computer doesn't turn off. I close the lid, let it go into sleep mode, open it, and the screen lights up again to the page I was on. Do you have any suggestions?Does the lid have to shut and SYSTEM have to go into sleep mode to get it back? It could be an intermittent break in the ribbon cable that powers the back lighting circuit. Next time it does this, try slowly shutting the lid but not all the way to where its going to TRIGGER the laptop to go into sleep mode and watch to see if it comes on before you shut the lid, as well as reopen it again without completely shutting lid and see if the display lights back up again with back lighting.

If you do not get it to come back by essentially flexing the ribbon cable in this manner then the back lighting circuit may be troubled and after it heats up it cuts out. So when closing the lid the high voltage circuit cools and then you open the lid and boot it and its a cold or WARM start vs a HOT start.

If this is the case then you will need to buy either a replacement backlight for the display or an entire laptop display if its a sealed unit with the backlighting.

The issue is either the screen or cable if its an led screen.. Typically you would not buy a "backlight" but replace the screen itself minus the plastic bezel etc. if its an lcd screen there is an inverter that might be bad as well... sounds like an easy fix, best of luck to you.